Mercurial > hg
view tests/test-strict.t @ 31467:08ecec297521
bdiff: use Python memory allocator in fixws
Python has its own memory allocation APIs. For allocations
<= 512 bytes, it allocates memory from arenas. This means that
average small allocations don't call the system allocator, which
makes them faster. Also, arena allocations cut down on memory
fragmentation, which can matter for performance in long-running
processes.
Another advantage of using the Python memory allocator is that
allocations are tracked by Python. This is a bigger deal in
Python 3, as modern versions of Python have some decent built-in
tools for examining memory usage, leaks, etc.
This patch converts a trivial malloc() + free() in the bdiff code
to use the Python allocator APIs. Since the object being
operated on is a line, chances are it will use an arena. So,
this could have a net positive impact on performance (although
I didn't measure it).
author | Gregory Szorc <gregory.szorc@gmail.com> |
---|---|
date | Thu, 09 Mar 2017 11:54:25 -0800 |
parents | 7109d5ddeb0c |
children | 5199c5b6fd29 |
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$ hg init $ echo a > a $ hg ci -Ama adding a $ hg an a 0: a $ hg --config ui.strict=False an a 0: a $ echo "[ui]" >> $HGRCPATH $ echo "strict=True" >> $HGRCPATH $ hg an a hg: unknown command 'an' Mercurial Distributed SCM basic commands: add add the specified files on the next commit annotate show changeset information by line for each file clone make a copy of an existing repository commit commit the specified files or all outstanding changes diff diff repository (or selected files) export dump the header and diffs for one or more changesets forget forget the specified files on the next commit init create a new repository in the given directory log show revision history of entire repository or files merge merge another revision into working directory pull pull changes from the specified source push push changes to the specified destination remove remove the specified files on the next commit serve start stand-alone webserver status show changed files in the working directory summary summarize working directory state update update working directory (or switch revisions) (use 'hg help' for the full list of commands or 'hg -v' for details) [255] $ hg annotate a 0: a should succeed - up is an alias, not an abbreviation $ hg up 0 files updated, 0 files merged, 0 files removed, 0 files unresolved